I would guess, but when I clicked on the photo it took me to the Scrapbook page and the photo was captioned. Hovering over the photo brings up an alt text with the same word. (Might want to fix that so that other people can guess!)
It's a sighting target for something. Given what you do for a living, I'd guess it's a nifty gizmo target for sighting telescopes, but I couldn't tell you how it works.
It's a chemical laser but in solid, not gaseous, form. As soon as we apply a field, we couple to a state that is radiatively coupled to the ground state. I figure we can extract at least ten to the twenty-first photons per cubic centimeter which will give one kilojoule per cubic centimeter at 600 nanometers, or, one megajoule per liter.
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